scholarly journals A process for the selective removal of bitumen/water emulsion stabilizing agents by using porous membranes

1984 ◽  
Author(s):  
B A Farnand ◽  
M A Poirier ◽  
H Sawatzky
Keyword(s):  
Selective Removal ◽  
Porous Membranes ◽  
Water Emulsion ◽  
Stabilizing Agents

Effect of phospholipid and (phospho)lipase modification on interfacial properties of oil/water emulsion

2015 ◽  
Vol 70 (1) ◽  
Author(s):  
Agnieszka Ewa Więcek
Keyword(s):  
Self Assembly ◽  
Interfacial Properties ◽  
Effective Diameter ◽  
Water Emulsion ◽  
Stabilizing Agents ◽  
Ionic Strength Effect ◽  
Zeta Potentials ◽  
Biological Phenomena ◽  
Aggregation Behaviour ◽  
Oil Water

AbstractThis review paper focused on the effect of typical phosphorlipid (or lecithin) and enzyme modification on electrokinetic parameters of oil/water emulsion. Physicochemical properties of the systems were investigated taking into account the effective diameter of the droplets as well as the zeta potentials using the dynamic light scattering technique. The effect of phospholipid and phospholipase modification on interfacial properties of o/w emulsion was examined as a function of temperature, pH and ionic strength (effect of NaThe phospholipids dipalmitoylphosphatidylcholine, DPPC or dioleoylphosphatidylcholine, DOPC having the same headgroup bound to the apolar tail composed of two saturated or unsaturated chains were used as stabilizing agents. The effective diameters do not always correlate with the zeta potentials. A possible reason for such behaviour might a mechanism different from the electrostatic stabilization. Phospholipids and their mixtures (e.g. lecithin) may undergo spontaneous aggregation in aqueous solution and organize into liposomes, which possess different sizes and surface affinities. These unique behaviours of phospholipid dispersion can be controlled using the investigated parameters. These findings are expected to increase in importance as phospholipid systems see more use in self-assembly applications.The other aim of the paper was the comparison of the enzyme phospholipase influence on lipid hydrolysis in the o/w emulsion environment. The work is the study which presents the twofold effect of ethanol dipoles on phosholipid hydrolysis. It is believed that the enzyme effect on the phospholipid aggregation behaviour at the oil-water interface will be helpful for understanding different biological phenomena.

scholarly journals Selective filtration of oil/water mixtures with bioinspired porous membranes

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32806-32811 ◽  
Author(s):  
Claudia Zeiger ◽  
Jana Kumberg ◽  
Felix Vüllers ◽  
Matthias Worgull ◽  
Hendrik Hölscher ◽  
...  
Keyword(s):  
Aquatic Plant ◽  
Selective Removal ◽  
Porous Membranes ◽  
Plant Leaves ◽  
Wetting Properties ◽  
Selective Filtration ◽  
Oil Water

Membranes inspired by special wetting properties of aquatic plant leaves enable selective removal of either oil or water from oil/water mixtures by filtration.

Improving method reliability through selective removal of glycerolipid and chlorophyll interferences

Planta Medica ◽  
2013 ◽  
Vol 79 (13) ◽  
Author(s):  
S Bijttebier ◽  
E D'Hondt ◽  
S Apers ◽  
N Hermans ◽  
S Voorspoels
Keyword(s):  
Selective Removal

New Technology for Oil/Water Emulsion Treatment: Phases I and II

1998 ◽  
Author(s):  
S. Venkatesh ◽  
C. Watson ◽  
C. D. Wolbach ◽  
L. R. Waterland
Keyword(s):  
New Technology ◽  
Water Emulsion ◽  
Oil Water

Potential for Treatment of Neurodegenerative Diseases with Natural Products or Synthetic Compounds that Stabilize Microtubules

2020 ◽  
Vol 26 (35) ◽  
pp. 4362-4372
Author(s):  
John H. Miller ◽  
Viswanath Das
Keyword(s):  
Natural Products ◽  
Neurodegenerative Diseases ◽  
In Vivo Models ◽  
Synthetic Compounds ◽  
Stabilizing Agents ◽  
Animal Models Of Disease ◽  
Model Studies ◽  
Models Of Disease

No effective therapeutics to treat neurodegenerative diseases exist, despite significant attempts to find drugs that can reduce or rescue the debilitating symptoms of tauopathies such as Alzheimer’s disease, Parkinson’s disease, frontotemporal dementia, amyotrophic lateral sclerosis, or Pick’s disease. A number of in vitro and in vivo models exist for studying neurodegenerative diseases, including cell models employing induced-pluripotent stem cells, cerebral organoids, and animal models of disease. Recent research has focused on microtubulestabilizing agents, either natural products or synthetic compounds that can prevent the axonal destruction caused by tau protein pathologies. Although promising results have come from animal model studies using brainpenetrant natural product microtubule-stabilizing agents, such as paclitaxel analogs that can access the brain, epothilones B and D, and other synthetic compounds such as davunetide or the triazolopyrimidines, early clinical trials in humans have been disappointing. This review aims to summarize the research that has been carried out in this area and discuss the potential for the future development of an effective microtubule stabilizing drug to treat neurodegenerative disease.

Biokinetic modeling for aerobic treatment of aqueous phase of oil-water emulsion

2016 ◽  
Vol 9 (4) ◽  
pp. 625-632
Author(s):  
Alireza Nazari Alavi ◽  
Mohammad Mirzai ◽  
Ali Akbar Sajadi ◽  
Hamed Hasanian
Keyword(s):  
Aqueous Phase ◽  
Aerobic Treatment ◽  
Water Emulsion ◽  
Oil Water ◽  
Biokinetic Modeling
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